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How to test a scooter controller
How to test a scooter controller

This process allows a user to determine if the scooter controller is functioning correctly

Updated over a week ago

Here is an excellent video on controller testing. Following this process will allow you to determine if the controller is functioning correctly.

Here's a summary:

1. **Tools Required**: A multimeter capable of measuring resistance or having a continuity mode.

2. **Testing for Shorts**:

- Connect one probe of the multimeter to the ground wire of the controller.

- Use the positive probe to test each phase wire (green, yellow, blue) for a short to the ground or the positive wire.

- Look for high resistance readings (over a kilohm or 10k ohm). Low resistance indicates a potential problem.

3. **Testing Each Phase Wire**:

- Measure resistance on each phase wire.

- Readings like 13.6, 21, or higher are good.

- Inconsistent readings between phases can indicate a fault.

4. **Testing Controller MOSFETs**:

- Test the controller's MOSFETs for shorts with both ground and positive wires.

- High resistance readings (in mega ohms) indicate no shorts.

5. **Multimeter Readings**:

- If the multimeter shows 'OL' or '1', it could be unable to read high resistance levels.

- Use continuity mode to check for shorts (a beep indicates a short).

6. **Outcome of Test**:

- If any test shows a short, the controller or its MOSFETs may need replacement.

- If a single phase is down, all MOSFETs in that phase should be replaced.

7. **Additional Motor Test**:

- Manually spin the motor. It should move freely with some magnetic resistance.

- Short two phases and try spinning. Difficulty in turning indicates normal functioning.

- If the motor spins smoothly without the controller and becomes hard to turn when connected, the controller is likely fine.

- If the motor is hard to turn with or without the controller, there might be a short in the motor or cable, potentially requiring motor replacement.

The presenter concludes by recommending starting with the multimeter test to ascertain whether the issue is with the motor or the controller.

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